Long range beginner and the 416PGW

Phew made it in! That login system ket thanking me for logging in and then booting me out the next second.
Thought I would introduce myself and ask around for a bit of advice. I'm a bigbore owner from Accurate reloaing.com. Own a 585 nitro wildcat a 375 and shotguns so long range is not my area of expertise.My work background is also limited to range firing at 330 yards or less.

Was wondering if anyone here has heard of or used the 416 PGW which looks like a very interesting calibre.
A few questions I havein any case are brass availability,dies(RCBS as usual?)load data and ballistics?
Also opinions on the Jensen bullets in the bigger calibres for hunting and long range work.
Thanks for any assistance,